Radiator-cap insert



A. C. GAYNOR.

RADIATOR CAP INSERT.

APPLzcATloN FILED DEc.22,1919.

Patented Nov. 30, 1920.

-innam-A /I l g1/www0@ me 61d. M @Hoz ARTHUR o. GAYNOR, or sTRATFoRD,CONNECTICUT;

RADIATOR-CAP INSERT.

.Specification of Letters Patent.

Patented Nov. 30, 1920.

y Application mea December 22, 1919. serial No. 346,523.

To all fwwm t may concern:

Beit known that I, ARTHUR C. GAYNOR, a citizen of the United States, anda resident of- Stratford, countyof Fairfield, State of Connecticut, haveinvented certain new and useful Improvements in Radiator-,Cap Inserts,of which the following is a specification.

This invention relates primarily to radiator closures or caps forautomobiles, but it has application in general \to the type of articleof manufacture in which a metallic insert, nucleus, frame or coreimparts mechanical strength to and furnishes an an-V choring means for amolded body.

One of the objects of the'invention is to provide an article of theabove type of pressed metal which is light andfdurable in construction.

Another object is to provide an article of the type mentioned whichshall be easy to manufacture, and in which the molded parts shallyet. befirmly and reliably anchored with respect to the insert portion.

Other objects will be in part obvious, in part pointed out hereinafter.

The inventionaccordingly consists in the features of construction,combination of ele'- ments, and arrangement of parts, which will beexemplified in the construction hereinafter set forth, and the scope ofthe application of which will be pointed out in the following claims,

In the accompanying drawings wherein is shown one of various possiblelembodiments of the several features of this invention;

Figure 1 is a view in longitudinal transverse section of a radiatorclosure embodying my invention, the location of the gasket beingindicated in dotted lines.

Fig. 2 is a sideelevation of the insert or,

metallic frame portion of the closure.

Fig. 3 is a top view of the insert, partly in section, al portion ofthemolded body `being shown broken away.

Referring now to the drawings, I have shown a radiator closure or capformed of a molded body portionpreferably of vulcanite which may befashioned in any of the well known ornamental shapes. This body bypreference has a milled gripping edge 14 by which it may readily bemanipulated in the application and .removal of the closure from theradiator. This vulcanite portion is preferably' molded about a metallicinsert in the form of a cap 2 having a base 3 and a flange 4. The innerportion of the flange is threaded as at 25 for coperation with the usualthreaded filling pipe (not shown) upon the radiator (not shown).

The metallic insert 2 is formed of pressed metal, the metal of thefiange adjoining the base 3 being pressed outwardly to form a bead 5. Bypreference one lateral edge of the bead extends inwardly of theperiphery of the insert base as at 6, whereby the main portion of thebase 3 is countersunk,the upper portion of the bead forming a ridge 15encircling the base, as clearly shown in Figs. 1 and 2. The otherlateral edge of the bead 5 is shown at 7 as intermediate the top andbottom of the insert 2. A. ledge 8 is formed within the cap immediatelyabove the threads ridge of the V extending at right angles to v the base3. Corresponding to these indentations there are of course elevations 12in the inside of the cap with apices less sharp than the ridges of theV-shaped depressions.

The bead is thus corrugate both externally and internally. If desired,the bead may be milled on the outside only,v but I prefer theconstruction shown and described. y

The upper counter sunk portion of the cap is preferably formed with amultiplicity of small, shallow depressions 13 uniformly distributedthroughout the area of said portion. p v

It will be seen that my metallic insert frame or core for the radiatorcap may be readily stamped and formed from a fiatv sheet of metal, andthat the bead and the corrugations therein may readily be formed inthesame process by well-known methods. The thread 25 is preferably cut intothe cap by an operation separate from the stamping and forming.

In the process of, manufacturing the rai diator closure or cap, thevulcanite or equivalent material is molded about the entire outsidesurface of the metallic cap. By pressure thebody of vulcanite is broughtinto i intimate contact with every depression and elevation in thesurface of the cap.

It will be seen by reference to Fig. 1 that the bead 5 constitutes aneffective anchoring means against the separation of the vulcanite bodyfrom the metallic frame, since the bead is of larger diameter than theinner diameter of the rmolded flange.

The vulcanite in the process of molding the same in place enters theV-shaped depression 11. and is thereby firmly anchored against rotationrelative to the metallic frame or core portion.

The pressure exerted upon the vulcanite in the process of molding alsocauses the same to fill the various depressions 13 in the insert base,thus bringing about intimate connection between the flat portion of themolded body and the base 3 of the insert.

The ridge 15 on the bead 5 constitutes an effective core, anchor andreinforce for the milled grip portion 14 of the molded body.

The inner portion of thepbead as above noted lodges the usual form ofgasket 9, the shoulder 8 in the frame portion preventing the gasket fromfalling out of the cap. The corrugations 12 in the inner surfacev of thebead constitute gripping surfaces for the gasket, preventing rotationthereof within the cap, thereby contributing to the tightness and thegeneral effectiveness of this element.

lft Will thus be seen that I have provided a simple pressed metal insertnucleus, core or frame for a molded radiator closure or cap Which inserteffectively anchors and reinforces all parts of the molded body. Thecorrugated bead 5 performs the double function of anchoring the moldedbody on its outside and effectively lodging the gasket on its inside.

As above noted, the cap 2 is formed of pressed metal. lf the insert werecast it is apparent that beside the threading, further machiningoperations, both inside and outside would ordinarily be required,particularly to form the bead construction. In general where an insertfor the purpose described is made of cast metal and regardless of thespecific structural details thereof several machining operations wouldordinarily be required, and for the same mechanical strength the castinsert would be materially heavier and bulkier.

It Will thus be seen that there is herein described apparatus in whichthe several features of this invention are embodied, and Which apparatusin its action attains the various objects of the invention and is Wellters Patent is z 1. A radiator cap insert comprising a pressed metal caphaving a base and a flange, a bead adjacent said base pressed outwardlyand having a plurality of indentations, whereby both the outer and theinner surfaces of said bead have irregularities, the former foranchoring thereon a moldable cap body against rotation and the latterfor similarly anchoring a gasket.

2. A metallic insert, frame or core for a radiator closure, said framecomprising a cap having a countersunk base portion and a flange, a beadconnecting said latter elements to each other, said bead being providedwith a plurality of indentations on each vertical wall thereof and thecountcrsunk base portion having a multiplicity of small indentationsthroughout its upper surface, the indentations on the outer Walls foranchoring thereon a moldable cap body and the indentations on the innerwall for anchoring a gasket.

3. A pressed metal insert for a radiator closure, comprising a caphaving a base, a threaded flange, and a bead connecting said base andsaid fiange, said flange having a ledge below said bead, said beadextending to both sides of the plane of said base, Whereby a portion ofsaid bead constitutes an upstanding ridge encircling said base, saidbead having equidistant V-shaped indentations on each of its inner andouter vertical walls, whereby said bead is corrugated both externallyand internally, the external corrugations for anchoring a moldable capbody thereto and the internal corrugations for similarly anchoring agasket.

lIn witness whereof I have hereunto set my hand at Bridgeport county ofFairfield, State of Connecticut, this 12 day of December 1919. l

ARTHUR C. GAYNOR.

